Apparatus for use in setting building stone



V-' 1931- F. A. DAVIDSON 1,829,739

APPARATUS FOR USE IN SETTING BUILDING STONE Fileq June 10, 1930 3 Sheets-Sheet 1 l NV ENTOR jam/M72 M ATTORNEY B; (WM

7 Nov. 3, 1931. F. A. DAVIDSON 1,829,739

APPARATUS FOR USE IN SETTING BUILDING STONE Filed June 10, 1930 3 Sheets-Sheet 2 ATTORNEY Nov. 3, 1931. v F. A. DAVIDSON I 1,829,739

APPARATUS FOR USE IN SETTING BUILDING STONE Filed June 10, 1930 3 Sheets-Sheet 5 INVENTOR M ATTOR Y 7 A kilns! "'IM l a tented Novgi i, 1 9.3 1

PATENT OFFICE v @EREDERIG sl nnv pson', or BAYSIDE, nnwyonx, ASSIGNOR TO AMERICAN, SAFETY riage which may be vertically adjusted as nnvrcn oogon Yong, N. 2.,

A CORPORATION or n Ew'YoRx 7 ismm ssos USE IN snr'rrlveinummive STONE in This invention relates to apparatus for use insetting building stone, and has for its platform of a suspended scaflold may with ease and facility, direct; thestone to its proper position. in the .wall' structure. f

" Moreljparticularly, the apparatus includes in combination-with the suspended scaflold, a

suspended horizontal"rail fora traveling cartlle construction ofthe building wall proigressea; and; the .said carriage is; provided with. stone setting means jscafi'old platform.

operable from the It is also another'iobject of the invention to providea' suspended scaifold with an im- 5 proved supporting meansyfor the ,overhead protection or covering which w1llj;afl"ord adequate protectionto the stonei masons,-

free manipulation of .withouteinterfering with; or obstructing the the stone position ng or settingmeans'.

r relative arrangement of its several parts as With .the above and other objects in View, the invention consists in the improved apparatusffor use" in the. setting of bu lding stonesv and in the .form, construction, and

will be hereinafter more fully described, illustratedin theaccompanying drawings; and

subsequently incorporated in the subjoinedf 1c1aims.

In thedrawings, wherein I have illustrated,

7 one simple and satisfactory embodiment of a 'my present improvements, and "in which similar reference characters designate corresponding parts throughout the jseveral views 1 j tical application I of the preferred embodivment of my invention;

Figure 'l'is an end elevation ,with strain parts shown in 'sectionillustrating one pracl Fig. 2 is an enlarged detail elevation showing thev manner of mounting'the vertical standards or? uprights ofthe overhead prote'ction -support .-at; the outer side of the scaffold;

w on the line 33 of Fig. 2;

Fig. 3 is detail horizontal sectiontaken,

[Fig. dis an enlarged detail view similar 1 therefore,

' ing or loweringthe scaffold.

1930. Serial no 460,129.

to Fig. 2, illustrating the means for mounting the uprights of the overhead protection support at the inner side of the scaffold;

Fig. 5 is a detail side elevation of certain of the parts shown in Fig. 4, and

Fig. 6 is a, fragmentary plan view of the transverse angle bar connecting theopposite ends of the'vertical uprights of the protec--,

tion'support.

Referring in detail to the drawings, in Fig.

1, I have shown a portion of a building inthe course of erection, and in which the wall in dicated at W is constructed of stone blocks.

It is the general practice in setting these stone blocks to hoist the individual blocks from the. ground by cables moving over sheaves on a swinging boom such as that indicated at B, suitably mounted upon the frame structure of the building. The operator controlling the swinging movements of scaffold. Such operations are comparatively tlme-consunnng,

and a large area of ground space is also occupied by the stone blocks which are unloaded from the trucks These piled stones on the ground being practically unprotected, are liable to breakage or damage. It is the purpose of my present invention to obviate these tdisadvantages of the present m'ethodof stone setting in the erection of buildings and to also expedite the proper setting of the individual stones and the completion of the building operation. P i

To the above end, the suspended scaffold indicated generally at 5 which extends horixzontally along the side of the building, is

provided at its inner and outer edges at longitudinally spaced intervals with'the usual hoisting devices shown at 6 upon the drums of which the suspending cables'7 attached at their upper ends in any suitable manner to raisthe beam or outrigger 8 arewound in For the protection of the masons or work supporting qty- ' men standing upon the soafiold platform against possible injury by falling materials,

" it is usual toprovide an overhead protecting covering or deckingaS shown at 9. This decking consists of. aplurality of longituextending planks or boards ;which arefj removably arranged 1' upon supports associatedrwitheach PQIlrTOf the hoisting deofthej-tubularmetal uprights and 11 respectively. The

end-eta bracket casting 12; The lower end of this casting is bifurcated as clearly shown hoistingldevicefi which is located next; adja- 2 cent to :the building. wall'W; I Thus while the inneredge of the scafioldplatforrn 'is closely acent to the face of the-building WalI," the standard 10 will be spacedout at l in'Fig. .5' of the drawingsythe spaced warms thereofbeing of channel shapedcross sectional form to receive the upper "end of the inner vertical frame member 6 of the wardly an appreciable distance therefrom.

V The upper ends of the .sp aced vertical frame a bars of. he hoisting; device '6 are connected 3 l in the usual "manner. by, a transverse' rod upon :which a cable guiding-sheave is loosely I 7 mounted. Thespaced lower end portionsof the casting 12 are providedlwith angu-larly disposed flanges having *openingsi at their lowerrends to receive a pin'1'6- extendingbeneath the endof the rod .15 to thereby retain on the upperend of thez'framebarfi.

" To the outer vertical trains bar 6 of-the ,other hoisting device atithe outer edge ofthe scaffold platform, verticallyispaced angular bracket members '17 are suitably secured, one

. legof each of these angular brackets being" channeled as at '18 toprevent turning or piv v Acting movement-of thebracket; The other arm of eaoh braoketsmemberhas-an opening :formed therethrough to receivea cylindrical downwardly. extendinglug formed on the angularly ofiset bracketr member21 which is.

riveted or otherwise securely fiziedto the supporting standard 11 Each 'ofthelugs 20 211;

I itsend is providedwiith la' transverseaperpture therethroughlto "receiveiaflocking key or pin 22 for retaining the lug in I connection with the bracket member '17. I

--1l11(receive the heads 23 and ..24respectively, formed with .flanges 23 and 24 which are vertical web"v of a transverse angle bar 25.

form. J

:bui-ldin 11 c Asishown 'in-Fi is formedwith anupstanding lug 28 which prevents shifting movement of the overhead protection" planking '9 longitudinally along the supporting angle bars.- i r i t ,It will be observed?fromkreference to Fig.

:1 of ;thefdraWings,--that i-theangle :bars 25 the;innermost plank; or board of the overhead protection decking 9 isfremoved so as to permitthe stone to bezfreelyraised :or low- "ere'dfwithout obstruction" andproperly ma nipulated by the masons sta'tion'ed on: the

latform :to'itsrequiredYlocation' the ;twaaaaaaa ing cables operated frorn thje? boom B and attached tofthe 'cradleor slingi29,the heavy stone 1 blecks may be quickly =unloaded from upper fioors of the bnilding'above'the point at; which the stone is bein'gfseti; Thusyfthe stone-will be afiordedza i certai n me as'urefof protection' against breakage or damage, and the ground surrounding the "building isfkept clear of such construction materials.

' the trucks and placedupon oneor more ofthe "In conjunction with the suspended platforin iorthe masons or workmen, I provide overhead protection 9 ofthe scaffoldas the r p gresses. Upon the base' flanges f i'nent; each carriage} ha ving i a 1 block and tackle33 suspended therefrom the cable or j'rope 345 of which amended 7 at one of its -e'nds with a rsuitable"sling for'jgrapple 35' v'v'hereby' the individual stone blocks" S Lma'y be removed from,tl1e floor of the building and swung I outwardly into} positiorlff for set ting in the all The other end; of the 5 cable or rope 34 ext'ends downwardly 'fclosely adjacent to the inner edgeflof the overhead protection {planking 9 tojthe' scafi'old of the platform; 5 where-,itmaybe v grasped and opjerated'. by the iworlnnen standing upon the platform; In this manner, ;it will be clear 7 that since the carriage 32xmay: beeasily;and quickly moved along the; rail .30to avpo'sition above the precise point atwhichthe stone is to be set, that the consumption of 'ti'm'eincident to properly-positioning and 's'etting the stone in the wallstructure will be reduced toa minimum-R '1 I .As. shownuin lligi '6 ofthe drawings, I maysecure tol'on'e sideof eachof thefangle a horizontally extending rail'30 adjustably suspended by means of the cables 31 togbe' v positioned at asuitable elevation abovthe .the bracket member; 512 in its applled' pos t on stone holstlng and positlonlng device.

bars 25, the spaced metal guide straps 36 for the scaffold hoisting cable 7. Y

' From the foregoing description considered in connection with the accompanying drawings, the construction of my improved 7 apparatus, itsmannerof operation, and several advantages in practical use will be fully and clearly understood; 7 After the work has been completed, in dismantling the scaffolding, the supporting standards 10 and 11 may be readily detached from the-hoisting drum frames, and then swung inwardly towards each other upon the angle'bar 25 so that the several parts of the supporting structure for the-overhead protection of the scaffold can be compactly arranged for convenience'in transportation. I have herein shown and described an embodiment of my present improvements which has given ,very satisfac r tory results in practical use. Nevertheless,

it is to be understood that the essential features thereof might also be incorporated in various other alternative structures, and I therefore, reserve the privilegefof resorting to all such'legitimate changes therein as may be fairly embodied within the spiritvand ends of said stanadrds, said beam the frame of the inner hoisting scope of the invention as claimed;

I claim:

v1. In combinationwith a suspended scaffold and hoisting devices at, the inner and In'testimony that I claim the foregoing as my invention, Ihave signed my name hereto. I FREDERIC A. DAVIDSON.

outer edges of the scaffold platform each having a frame, supporting means for an overhead protectlon comprising inner and outer standards, means for detachably mounting the standards at their lower ends upon'the frame of the respective hoisting devices, and I 'a transverse supporting beam for overhead protection planking connected to the upper projecting inwardly beyond the standard mounted upon device. and beyond the inner edge of the scaffold platform, the overheadlprotection plank on the inner end of said transverse beambeing adapted to be removed to accommodate a '2. In combination with a suspended scaffoldand hoisting devices at the innerand outeredges of the scaffold platform each having a frame, supporting means for an over- 7 head protection comprlsmg inner and outer standards, means for detachably mounting the standards at their lower ends upon the 'framesof the respective hoisting drums, a

transverse supporting beam for the overhead protection planking. and socketmembers secured to said beam at longitudinally spaced points to detachably receive the upper ends of said inner and outer standards. 7 p

3. In combination'with asuspended scaffold-and hoisting devicesat-the inner and outer edges of the scaffold platform each having a frame, supporting means for an overhead protection comprising inner and outer tubular standards, apertured parts fixed to 

